The effect of coupling the solar still with a
solar collector is shown in Fig. 4. From Fig. 4, it
can be concluded that there is proportionality
in water production with respect to the basin
water temperature. The higher the temperature
the higher the output will be from the distillation system. This high productivity is expected
as a result of coupling the collector with solar
still. This can be explained by the fact that solar
collector will preheat the feed water into the
solar stills. Solar collectors have a higher efficiency than solar stills. Increased temperature
of the water in the basin increases the rate, as
well as the total output of distillate. The percentage of enhancement in daily productivity due
Fig. 2. The relation of solar intensity and still output
during October.
Fig. 3. Effect of ambient temperature on passive
solar still productivity.
Fig. 4. Comparative variation of still productivity.
140 O.O. Badran, H.A. Al-Tahaineh / Desalination 183 (2005) 137–142
to coupling of solar collector (3510 mL) is calculated, and found to be 36% more than that
when the still was operated alone (2240 mL).